CN108250606A - A kind of super low-temperature resistant ASA composite material and preparation method thereof - Google Patents
A kind of super low-temperature resistant ASA composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of super low-temperature resistant ASA composite material and preparation method thereof, feed components form as follows according to parts by weight：30 60 parts of AS resins；20 50 parts of ASA rubber powders；5 20 parts of low temperature modification agent；5 10 parts of toughener；0.5 2 parts of weather resisting agent.The low temperature modification agent prepared using AES resins and modified silicon rubber is taken into account mechanical property and low-temperature flexibility, then is blended with other related auxiliaries such as AS resins, ASA rubber powders, toughener.Through Dual inoculation extruding pelletization, each component can be better dispersed, so as to obtain high flowing, high durable, low temperature resistant ASA materials.ASA materials prepared by the present invention have excellent glossiness and mobility, can meet the appearance and processing request of automobile and white goods product；There is the low-temperature flexibility and weatherability of superelevation again simultaneously, it is ensured that normal use of the product under cryogenic conditions and outdoor environment.
Description
Technical field
The invention belongs to polymeric material fields, and in particular to a kind of super low-temperature resistant ASA composite material and preparation method thereof.
Background technology
ASA resin is also referred to as AAS resin, is made of acrylonitrile (A), styrene (S) and acrylate (A) three-component grafted
Copolymer.Compared with ABS, the not double bond containing acrylic rubber of use substitutes butadiene rubber, thus weatherability has essence
Improve, 10 times or so are higher by than ABS.It is exposed to the sun in the sunlight 9~15 months, impact strength and elongation are almost without decline, face
Color also has almost no change.The mechanical property of ASA, processing performance, electrical insulating property, chemical-resistant are similar to ABS, but due to
The glass transition temperature of acrylic rubber is only -30 DEG C, far below butadiene rubber.So the low-temperature impact of ASA is than ABS trees
Fat is far short of what is expected, this just seriously limits the application range of ASA.
The current common modified device in market is double screw extruder, for the ASA powders of high-glue content, dispersion
Difficulty causes the wide fluctuations of performance.
It is proposed prepares the ASA materials of a kind of ultralow gloss, super low-temperature resistant in patent CN106810809A, by adding nucleocapsid
Structure copolymer improves low temperature resistant toughness, reduces the function and effect of nuclear structure rubber low temperature resistance performance, and obtained material
Expect that room temperature impact and mobility are all relatively low, in the processing of some big products and in use, there are problems that.
Itd is proposed in patent CN201610410631.X it is a kind of improve ASA low-temperature impact toughness method, EMA-GMA,
EBA-GMA, EEA-MAH be used as low-temperature impact toughness improver, while low-temperature flexibility is improved, the mobility of material entirety with
Glossiness but substantially reduces, so as to not be suitable for some appearance members and big product.
Therefore, a kind of super low-temperature resistant ASA composite material how is researched and developed, improves low-temperature impact, has important practical significance.
Invention content
The present invention is for existing technical problem, and using blend modification technology, the present invention proposes to prepare a kind of super low-temperature resistant ASA
Composite material and preparation method thereof.
For achieving the above object, the technical solution adopted by the present invention is as follows：
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：30-60 parts of AS resins；
20-50 parts of ASA rubber powders；5-20 parts of low temperature modification agent；5-10 parts of toughener；0.5-2 parts of weather resisting agent；
The toughener is grafted kalimeris acid anhydrides for ethylene propylene diene rubber, maintains the low-temperature flexibility of ethylene propylene diene rubber,
It has been grafted maleic anhydride again, has increased the compatibility of it and other materials, has been the spotlight of the present invention.
Further, the AS resins are acrylonitritrile-styrene resin, and weight average molecular weight is in 5-15 ten thousand, acrylonitrile
Content is 20-30%, is 20-70g/10min in the melt index of the test condition of 220 DEG C/10kg.
Further, the ASA rubber powders are the terpolymer of styrene-acrylonitrile-acrylate, and acrylate contains
It measures as 40-60%, the melt index under the test condition of 220 DEG C/10kg is 5-25g/10min.
Further, the weather resisting agent is 2'- (2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) -5- chlorobenzenes and three
Azoles, 2- (bis- tertiary amyl phenyl of 2'- hydroxyls -3', 5'-) benzotriazole, 2- (2'- hydroxyl -5'- t-octyls phenyl) benzotriazole,
Bis- (2,2,6,6- tetramethyl-piperidyls) sebacates, it is poly- [[6- [(1,1,3,3- tetramethyl butyls) amine] -1,3,5- triazine -2,
4- diyls] [(2,2,6,6- tetramethyl -4- piperidines) is sub- for two dihexyls of [(2,2,6,6- tetramethyl -4- piperidines) imines] -1,6-
One or more of amine]]].
Further, the feed components in the low temperature modification agent form as follows according to parts by weight：AES resins 20-
70 parts, 20-70 parts of silicon rubber, 1-5 parts of DOP plasticizer (dioctyl phthalate), 1-5 parts of compatilizer, silane coupling agent 1-5
Part, 0.5-2 parts of processing aid, 0.5-2 parts of antioxidant.
Further, terpolymer of the AES resins for acrylonitrile-styrene-ethylene propylene diene rubber, ternary second
The content of third rubber is 50-70%, and the melt index under the test condition of 220 DEG C/10kg is 5-25g/10min.
Further, the silicon rubber is methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, ethyl silicon rubber
One or more of glue.
Further, the compatilizer is vinyl-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, work
One or more of property Silane Grafted EP rubbers；The antioxidant is four [β-(3,5 di-tert-butyl-hydroxy phenyls)
Propionic acid] in pentaerythritol ester, phosphorous acid three (2,4- 6- di-tert-butyl phenyl esters) or distearyl pentaerythritol diphosphite
It is one or more of.
Further, the processing aid be N, N'- ethylene bis stearamides, oxidized polyethylene wax, pentaerythritol resin
One or more of fat acid esters or carrier-free silicone master batch.
A kind of preparation method of super low-temperature resistant ASA composite material, specifically includes following steps：
(1) low temperature modification agent is prepared：
A, proportionally precise silicon rubber and DOP plasticizer, carry out premix and handle to obtain modified silicon rubber；
B, proportionally precise AES resins, compatilizer, coupling agent, processing aid and antioxidant, with modified silicon rubber
High mixed pot is added in simultaneously and mixes 3-5min, then through double screw extruder, and low temperature modification agent is prepared in stretching and granulation；
(2) super low-temperature resistant ASA composite material is prepared：
A, proportionally precise ASA rubber powders, low temperature modification agent, toughener, weather resisting agent, the high mixed pot of addition mix 3-5min
After take out, as the first component；
B, proportionally precise AS resins separately as the second component；
C, the first uniformly mixed component is added to the double screw extruder of Dual inoculation, the length of double screw extruder
For diameter than 36, extrusion temperature is 200-240 DEG C, screw speed 400-600rpm, after the first rank twin-screw shear melting, into the
In second order single screw extrusion machine；Second component is proportionally continuously added into the single screw extrusion machine of Dual inoculation, single spiral shell
The draw ratio of bar extruder is 7, and extrusion temperature is 200-240 DEG C, and screw speed 50-70rpm is sheared by single screw rod, is squeezed out,
It is granulated, drying obtains super low-temperature resistant ASA composite material.
Beneficial effects of the present invention are：
The low temperature modification agent that the present invention is prepared using AES resins and modified silicon rubber, takes into account mechanical property and low-temperature flexibility,
It is blended again with other related auxiliaries such as AS resins, ASA rubber powders, toughener.It is through Dual inoculation extruding pelletization so that it can more preferable
Dispersion high-glue content ASA rubber powders, obtain haveing excellent performance stable super low-temperature resistant ASA composite material, it is excellent both to have maintained ASA
Weather resistance and silicon rubber resistance to low temperature, while the low-temperature flexibility of AES resins and resistance to ag(e)ing is allowed to obtain maximum journey again
The performance of degree ensures normal use of the product outdoors under environment and cryogenic conditions, so as to increase making for product to a greater extent
It with the service life, can be widely applied in the material for being chronically at low temperature environment and solar irradiation, solve some household electrical appliances and outdoor production
Use of the product under severe cold outdoor conditions, transportation problem.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to embodiment, to this hair
It is bright to be described in further detail.
A kind of preparation method of super low-temperature resistant ASA composite material, specifically includes following steps：
(1) low temperature modification agent is prepared：
A, proportionally precise silicon rubber and DOP plasticizer, carry out premix and handle to obtain modified silicon rubber；It reduces
Silicon rubber crystallization temperature improves its resistance to low temperature；
B, proportionally precise AES resins, compatilizer, coupling agent, processing aid and antioxidant, with modified silicon rubber
High mixed pot is added in simultaneously and mixes 3-5min, then through double screw extruder, and low temperature modification agent is prepared in stretching and granulation；
The silicon rubber rubber best as lower temperature resistance, glass transition temperature reach -120 DEG C, at the same it possess again it is good
Good weatherability, becoming does not influence ASA materials weatherability can promote being preferably selected for low-temperature flexibility again.The present invention is in order to more into one
Step expands its lower temperature resistance, adds in plasticizer DOP, weakens the interaction of silicon rubber molecule interchain, makes strand activity
Increase, so as to decline glass transition temperature, resistance to low temperature improves.But silicon rubber is while possess excellent cold resistance,
Its physical mechanical property is poor, and AES and premix silicon rubber are first carried out extruding pelletization by the present invention, is ensureing that silicon rubber low temperature is tough
On the basis of property, improve its mechanical performance with AES.
(2) super low-temperature resistant ASA composite material is prepared：
A, proportionally precise ASA rubber powders, low temperature modification agent, toughener, weather resisting agent, the high mixed pot of addition mix 3-5min
After take out, as the first component；
B, proportionally precise AS resins separately as the second component；
C, the first uniformly mixed component is added to the double screw extruder of Dual inoculation, the length of double screw extruder
For diameter than 36, extrusion temperature is 200-240 DEG C, screw speed 400-600rpm, after the first rank twin-screw shear melting, into the
In second order single screw extrusion machine；Second component is proportionally continuously added into the single screw extrusion machine of Dual inoculation, single spiral shell
The draw ratio of bar extruder is 7, and extrusion temperature is 200-240 DEG C, and screw speed 50-70rpm is sheared by single screw rod, is squeezed out,
It is granulated, drying obtains super low-temperature resistant ASA composite material.
AES resins are the terpolymers being polymerized by acrylonitrile, styrene and ethylene propylene diene rubber, are possessed and ASA
Same mechanical property and weather resistance.Unlike：The glass transition temperature of ethylene propylene diene rubber is -60 DEG C, is far above
Acrylic rubber in ASA can effectively improve the low-temperature flexibility of ASA；AS resins are styrene-acrylonitrile polymer,
On the one hand because the compatibility of AS/ASA/AES is very good, the advantages of each material can be given full play to, possess product excellent
Processability and appearance hardness.Another aspect is that the cost of AS is relatively low, can greatly promote the market competitiveness of ASA.
The present invention also utilizes novel processing technology：Dual inoculation.High-glue content and high addition ratio because of ASA rubber powders
Example exists disperse the problem of irregular in process, causes the unstability of material property.In order to solve this problem, originally
Existing Dual inoculation is transformed in invention, and improved Dual inoculation is is divided into two ranks：First rank is same at a high speed
To parallel double-screw extruder, shearing to material and pre-dispersed is realized；Second-order be low speed single screw extrusion machine, to material into
The plasticizing and mixing of row again.The two is arranged into perpendicular quadrature.In the vertical friendship of double screw extruder and single screw extrusion machine
One barrel of place's setting, detector and Weightlessness balance are connect, when ensureing that the material in twin-screw reaches intersection, another part material can
With proportionally accurate blanking.By first melting a part, the method for adding another part not only ensures that plasticizing is complete, but also energy
It is uniformly dispersed.
During concrete operations：ASA powders and other auxiliary agents are added in the double screw extruder of Dual inoculation, it is ensured that powder
Material and each auxiliary agent melt and after mixing, AS pellets, the synchronous list into Dual inoculation are added in according still further to ratio completely
In screw extruder, ensure the complete mixing of the two.Whole process, for double screw extruder：By first melting one
Part, the method for adding another part had not only ensured that the plasticizing of powder was complete, but also completed the dispersion mixing of all materials.
Embodiment 1
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 1 part, 20 parts of methyl vinyl silicone rubber, 70 parts of AES resins, 4 parts of vinyl-vinyl acetate copolymer, silane
4 parts, N of coupling agent, 0.5 part of N'- ethylene bis stearamides, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythrites
0.5 part of ester, mixes and prepares low temperature modification agent through twin-screw extrusion.
60 parts of AS resins, 50 parts of ASA rubber powders, 15 parts of low temperature modification agent, 5 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.5 part of -5- chlorobenzotriazoles.Blending is squeezed out through Dual inoculation, is obtained
Material prepares test bars in 90 DEG C of dry 2-4h of air blower drying oven, then injection molding.
Embodiment 2
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 5 parts, 70 parts of methyl phenyl vinyl silicone rubber, 20 parts of AES resins, 2 parts of vinyl-vinyl acetate copolymer,
2 parts, N of silane coupling agent, 0.5 part of N'- ethylene bis stearamides, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] seasons penta
Four 0.5 part of alcohol esters, mix and prepare low temperature modification agent through twin-screw extrusion.
50 parts of AS resins, 40 parts of ASA rubber powders, 10 parts of low temperature modification agent, 5 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.5 part of -5- chlorobenzotriazoles, bis- (2,2,6,6- tetramethyl-piperidyl) last of the ten Heavenly stems
Two 0.5 part of acid esters.Blending is squeezed out through Dual inoculation, and obtained material is in 90 DEG C of dry 2-4h of air blower drying oven, then
Injection molding prepares test bars.
Embodiment 3
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 4 parts, 25 parts of methyl vinyl silicone rubber, 25 parts of methyl phenyl vinyl silicone rubber, 35 parts of AES resins, second
4 parts of alkene-vinyl acetate copolymer, 5 parts, N of silane coupling agent, 0.5 part of N'- ethylene bis stearamides, carrier-free silicone master batch
0.5 part, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] 0.5 part of pentaerythritol esters, (2, the 4- di-t-butyls of phosphorous acid three
Phenyl ester) 0.5 part.Mixing prepares low temperature modification agent through twin-screw extrusion.
45 parts of AS resins, 25 parts of ASA rubber powders, 10 parts of low temperature modification agent, 10 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides,
2'- (2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.8 part of -5- chlorobenzotriazoles, bis- (2,2,6,6- tetramethyl-piperidyls)
0.5 part of sebacate.Blending is squeezed out through Dual inoculation, and obtained material is in 90 DEG C of dry 2-4h of air blower drying oven, so
Injection molding prepares test bars afterwards.
Embodiment 4
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 2.5 parts, 40 parts of methyl vinyl silicone rubber, 50 parts of AES resins, 5 parts of ethylene-ethyl acrylate copolymer, silicon
1 part of alkane coupling agent, 0.8 part of carrier-free silicone master batch, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters
0.7 part, 0.5 part of phosphorous acid three (2,4- 6- di-tert-butyl phenyl ester).Mixing prepares low temperature modification agent through twin-screw extrusion.
30 parts of AS resins, 30 parts of ASA rubber powders, 5 parts of low temperature modification agent, 5 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2-
(bis- tertiary amyl phenyl of 2'- hydroxyls -3', 5'-) 1 part of benzotriazole, 2- (2'- hydroxyl -5'- t-octyls phenyl) benzotriazole 0.5
Part.Blending is squeezed out through Dual inoculation, and obtained material is in 90 DEG C of dry 2-4h of air blower drying oven, then injection molding system
Standby test bars.
Embodiment 5
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 1 part, 25 parts of ethyl silicon rubber, 65 parts of AES resins, active silane 1 part of EP rubbers of grafting, silane coupling agent 4
Part, 1 part of oxidized polyethylene wax, 1 part of pentaerythritol fatty ester, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] seasons penta
Four 1 part of alcohol esters, 1 part of distearyl pentaerythritol diphosphite mix and prepare low temperature modification agent through twin-screw extrusion.
60 parts of AS resins, 20 parts of ASA rubber powders, 20 parts of low temperature modification agent, 10 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2-
(2'- hydroxyl -5'- t-octyls phenyl) 1 part of benzotriazole, poly- [[6- [(1,1,3,3- tetramethyl butyl) amine] -1,3,5-triazines -
2,4- diyls] [(2,2,6,6- tetramethyl -4- piperidines) is sub- for two dihexyls of [(2,2,6,6- tetramethyl -4- piperidines) imines] -1,6-
Amine]]] 1 part.Blending is squeezed out through Dual inoculation, then obtained material is molded in 90 DEG C of dry 2-4h of air blower drying oven
Molding prepares test bars.
Test and evaluate by the following method the performance of product in Examples 1 to 5.
(1) Izod notch impact strengths：By ASTMD256 standard testings；Room temperature shock-testing condition is 23 ± 2 DEG C, low temperature
Shock-testing condition is under the conditions of -23 ± 2 DEG C, freezes 2-4h, and test is completed in 10s.
(2) melt flow rate (MFR)：By ASTMD1238 standard testings, test condition is 220 DEG C/10kg.
(3) tensile strength：It is tested by ASTMD638 standard methods, test speed 50mm/min.
(4) bending strength：It is tested by ASTMD790 standard methods, test speed 2mm/min.
(5) ultraviolet ageing：It is tested by ASTMG154 standard methods, length of testing speech 500h.
Comparative example 1
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：
60 parts of AS resins, 50 parts of ASA rubber powders, 0 part of low temperature modification agent, 0 part of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.5 part of -5- chlorobenzotriazoles.Blending is squeezed out through Dual inoculation, is obtained
Material prepares test bars in 90 DEG C of dry 2-4h of air blower drying oven, then injection molding.
Comparative example 2
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：DOP plasticizer (adjacent benzene two
Formic acid dioctyl ester) 1 part, 20 parts of methyl vinyl silicone rubber, 70 parts of AES resins, 4 parts of vinyl-vinyl acetate copolymer, silane
4 parts, N of coupling agent, 0.5 part of N'- ethylene bis stearamides, four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythrites
0.5 part of ester, mixes and prepares low temperature modification agent through twin-screw extrusion.
60 parts of AS resins, 50 parts of ASA rubber powders, 15 parts of low temperature modification agent, 0 part of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.5 part of -5- chlorobenzotriazoles.Blending is squeezed out through Dual inoculation, is obtained
Material prepares test bars in 90 DEG C of dry 2-4h of air blower drying oven, then injection molding.
Comparative example 3
A kind of super low-temperature resistant ASA composite material, feed components form as follows according to parts by weight：
60 parts of AS resins, 50 parts of ASA rubber powders, 0 part of low temperature modification agent, 5 parts of ethylene propylene diene rubber grafting kalimeris acid anhydrides, 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) 0.5 part of -5- chlorobenzotriazoles.Blending is squeezed out through Dual inoculation, is obtained
Material prepares test bars in 90 DEG C of dry 2-4h of air blower drying oven, then injection molding.
The performance test results of super low-temperature resistant ASA composite material obtained by Examples 1 to 5 are as shown in the table：
The performance test results of super low-temperature resistant ASA composite material obtained by embodiment 1-5
As shown in Table 1, a kind of super low-temperature resistant ASA composite material performance of the invention is stablized, and it is original both to have maintained ASA materials
Mechanical performance and weather resistance, and the low temperature resistant toughness of material can be promoted.Embodiment 1-5 is it is found that with low temperature modification agent
Adding proportion increases, and the impact of material all increases therewith, and particularly low-temperature impact, weather resistance and stretching/bending strength are opposite
Stablize, melt index is declined slightly, and can meet the process requirements of material completely.On the basis of embodiment 1, done three it is right
Ratio.From comparative example 1-3：When not adding low temperature modification agent and ethylene propylene diene rubber grafting kalimeris acid anhydrides, ASA materials
Often/low-temperature impact has significantly to be declined very much；When only adding low temperature modification agent, room temperature impact has certain promotion, low
Temperature impact has particularly apparent promotion；When only addition ethylene propylene diene rubber grafting kalimeris acid anhydrides, the promotion of room temperature impact is special
Significantly, on the one hand it is toughness that this toughener assigns material in itself, is on the other hand ethylene propylene diene rubber grafting kalimeris acid anhydrides
The effect of a part of compatilizer is carried again, performs to the toughening effect of itself ultimate attainment.So the present invention obtain it is low temperature resistant
ASA composite material either mechanical property or processing and weather resistance, can meet the use of existing market.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited；Although with reference to aforementioned reality
Example is applied the present invention is described in detail, it for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution recorded in example modifies or carries out equivalent replacement to which part technical characteristic；And these are changed or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of super low-temperature resistant ASA composite material, which is characterized in that feed components form as follows according to parts by weight：AS resins
30-60 parts；20-50 parts of ASA rubber powders；5-20 parts of low temperature modification agent；5-10 parts of toughener；0.5-2 parts of weather resisting agent；
The toughener is grafted kalimeris acid anhydrides for ethylene propylene diene rubber.
2. a kind of super low-temperature resistant ASA composite material according to claim 1, which is characterized in that the AS resins are third
Alkene nitrile-styrol copolymer, weight average molecular weight is in 5-15 ten thousand, acrylonitrile content 20-30%, in the test-strips of 220 DEG C/10kg
The melt index of part is 20-70g/10min.
3. a kind of super low-temperature resistant ASA composite material according to claim 1, which is characterized in that the ASA rubber powders are benzene
The terpolymer of ethylene-propylene nitrile-acrylate, acrylate content 40-60%, in the test condition of 220 DEG C/10kg
Under melt index be 5-25g/10min.
4. a kind of super low-temperature resistant ASA composite material according to claim 1, which is characterized in that the weather resisting agent is 2'-
(2'- hydroxyl -3'- tertiary butyl -5'- aminomethyl phenyls) -5- chlorobenzotriazoles, 2- (bis- tertiary amyl phenyl of 2'- hydroxyls -3', 5'-) benzene
It is and triazole, 2- (2'- hydroxyl -5'- t-octyls phenyl) benzotriazole, bis- (2,2,6,6- tetramethyl-piperidyls) sebacates, poly-
[[6- [(1,1,3,3- tetramethyl butyls) amine] -1,3,5- triazine -2,4- diyls] [(2,2,6,6- tetramethyl -4- piperidines) is sub-
One or more of amine] two dihexyls [(2,2,6,6- tetramethyl -4- piperidines) imines] of -1,6-]].
A kind of 5. super low-temperature resistant ASA composite material according to claim 1, which is characterized in that the low temperature modification agent
In feed components according to parts by weight form it is as follows：20-70 parts of AES resins, 20-70 parts of silicon rubber, 1-5 parts of DOP plasticizer,
1-5 parts of compatilizer, 1-5 parts of silane coupling agent, 0.5-2 parts of processing aid, 0.5-2 parts of antioxidant.
6. a kind of super low-temperature resistant ASA composite material according to claim 5, which is characterized in that the AES resins are third
The terpolymer of alkene nitrile-styrene-ethylene propylene diene rubber, the content of ethylene propylene diene rubber is 50-70%, in 220 DEG C/10kg
Test condition under melt index be 5-25g/10min.
7. a kind of super low-temperature resistant ASA composite material according to claim 5, which is characterized in that the silicon rubber is first
One or more of base vinylsiloxane rubber, methyl phenyl vinyl silicone rubber, ethyl silicon rubber.
8. a kind of super low-temperature resistant ASA composite material according to claim 5, which is characterized in that the compatilizer is second
One or more of alkene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, active silane grafting EP rubbers；
The antioxidant is four [β-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, (2,4- bis- uncles of phosphorous acid three
One or more of butyl phenyl ester) or distearyl pentaerythritol diphosphite.
9. a kind of super low-temperature resistant ASA composite material according to claim 5, which is characterized in that the processing aid is
N, N'- ethylene bis stearamide, oxidized polyethylene wax, pentaerythritol fatty ester or one kind or several in carrier-free silicone master batch
Kind.
10. a kind of super low-temperature resistant ASA composite material according to claim 1 or 5, which is characterized in that preparation method has
Body includes the following steps：
(1) low temperature modification agent is prepared：
A, proportionally precise silicon rubber and DOP plasticizer, carry out premix and handle to obtain modified silicon rubber；
B, proportionally precise AES resins, compatilizer, coupling agent, processing aid and antioxidant, with modified silicon rubber simultaneously
It adds in high mixed pot and mixes 3-5min, then through double screw extruder, low temperature modification agent is prepared in stretching and granulation；
(2) super low-temperature resistant ASA composite material is prepared：
A, proportionally precise ASA rubber powders, low temperature modification agent, toughener, weather resisting agent, the high mixed pot of addition take after mixing 3-5min
Go out, as the first component；
B, proportionally precise AS resins separately as the second component；
C, the first uniformly mixed component is added to the double screw extruder of Dual inoculation, sheared through the first rank twin-screw molten
After melting, into second-order single screw extrusion machine；Second component is proportionally continuously added into the single screw rod of Dual inoculation
Extruder is sheared by single screw rod, is squeezed out, and is granulated, and drying obtains super low-temperature resistant ASA composite material.
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| CN109337276A (en) * | 2018-09-13 | 2019-02-15 | 广东锦湖日丽高分子材料有限公司 | A kind of ASA resin composition of low-temperature impact-resistant and preparation method thereof |
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| CN112210182A (en) * | 2020-10-26 | 2021-01-12 | 上海金发科技发展有限公司 | ASA composite material for outdoor use and preparation method thereof |
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